Sighting apparatus



E. SCHNEIDER. SIGHTING APPARATUS.

APPLxcAvlon FILED SEPT. lo. 191s.

Patent Gmb. 5, i926.

6 SHEETS-SHEET l.

E. SCHNEFDEH. slGHTING APPARATUS.

APPLICATIDN FILED SEPT. l0, 1918.

1,354,851 Patented Oct. 5, 1920;.

6 SHEETS-SHEET 2.

E. SCHNEIDER. SIGHTING APPARATUS.

APPLICATION man SEPT. 1o, 191s.

.Patend Oct. 5; 1920.

6 SHEETS-SHEET 3.

E. SCHNEIDR. SIGHTING APPARATUS.

A PPLICMIQMILED SEPT. 410. ma.

Patented 00s. 5,19%,

5 SHEETS-SHEET X29' www J E. SCHNEIDER. SIGHTING APPARATUS.

APPLICATION FILED SEFT. l0, 1918.

1,354,851. Emma oen-5,1920..

6 SHEETS-SHEET 5.

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UNlTEiE S'l1/3l.'E`l:"lSv 'PATFNT OFFICE.

EUGENE SCHNEIDER, or PARIS. FRANCE. AssioNoR 'ro sCHNEIDER & CIE.. 0E PARIS. ERANcE, A LIMITED JoINnsrocK COMPANY or 'FRANCE'.

SIGHTING APPARATUS.

Application filed. September 10, 1918.

To all whom it 'may concern Be it known that I, EUGENE SCHNEIDER, a citizen of the French Republic, and a resident of 42 Rue dAnjouParis, France, have invented a new and useful Improvement in Sighting Apparatus, which invention is fully set forth in the following speciication.

rhis invention has i'or its object to provide an improved apparatus designed Jfor use in combination with collimators or other similar sighting apparatus and enabling the employment of an auxiliary object situated at the rear of the observer as a :fixed point in sighting.

rlphe improved apparatus consists of a single plane mirror located at the rear or sighting end of the collimator proper, or of the support for the latter, and' which, whether ixed or retractable, is mounted in such a manner that in its position of most frequent use it is situated at right angles to the horizontal axial plane of the collimator but inclined relatively to the vertical axial plane of the latter, the vertical axis of the said mirror being in coincidence with the vertical guide line of the crossed hair lines of the collimator, while the upper or lower tree edge 'of the mirror is situated close to the horizontal guide line of the said crossed hair lines, which is left visible.

The invention is capable of receiving a variety of mechanical expressions several of which areV shown on the accompanying drawings, but it is to be expressly understood that the drawings are for the purpose of illustration only and are not to be construed as a definition of the limits of the invention, reference being had to the appended claims for that purpose.

ln said drawings:

IFigures l to 4 show one embodiment of the invention.

Fig. l is a side elevation partly in vertical section along theaxis of a collimator or" any suitable type and provided with the improved apparatus of the present invention.

Fig. 2 is an end elevation thereof.

Fig. 3 is a horizontal section on the line lll-III of Fig. l.

Specification of Letters Patent.

Patented Oct. 5, 1920.

Serial No. 253,456.

Fi 4 is a cross section on the line IV- V of Fig. 3.

Fig. 5 is a vertical longitudinal section partly in side elevation of another embodiment of the invention.

Fig. 6 is a horizontal section on the line Ivif-vi of Eig. 5.

Figs. 7 and 8 are respectively sections on Jghe lines VII-VII and VIII-VIII of l ig. 5.

Fig. 9 is a longitudinal vertical section on the line lX-IX of Fig. l0 of a further embodiment of the invention.

Fig. l0 is a horizontal section on the line X-X of Fig. 9.

Fig. 1l is a cross section on the line Xl-Xl of Fig. l0.

Fig. 12 is a rear end elevation.

Fig. 13 is a vertical longitudinal section of yet another embodiment of the invention, the mirror being shown in its position of use.

Fig. 14 is a horizontal section on the line XIV-XIV of Fig. 13, and

Fig. l5 shows the mirror turned down into a position wherein it is protected inside the collimator box.

In Figs. l to 4, A is the collimator proper, of any suitable construction, mounted in a box B, the support C of which may be combined in any suitable manner with a Vdevice for reading angles.

The apparatus for utilizing a fixed point to the rear consists oit a single plane mirror D, the supporting` frame E of which is, in this first example, shown as fixed permanently by means of screws e to the underside of the collimator box B. The mirror is mounted at the rear or sighting end of the coliimator adjacent the crossed hair-lines thereof and arranged in such a manner that its plane is at right angles to the horizontal axial plane of the collimator, whereby the mirror will be in a vertical position when the longitudinal axis of the collimator is-horizontal, but at the same time the plane of the mirror is inclined relatively to the vertical axial plane g/-y/ of the collimator as shown in Fig. 3. The position of the mirror is further such that its vertical axis coincides with the vertical guide line 'u while a horizontal edge thereof is close to but leaves visible the horizontal guide line t of the crossed hair-lines ofthe collimator. With this apparatus,'the observer is able, on taking a sight with his right eye, to vobserve easily aplixed point situated behind him on his right hand, and to bring the vertical guide line of the crossed hairlines into coincidence with the axis of said fixed point.

The frame E may be constructed in such a manner as to allow oi a rapid replacement of the mirror D. For this purpose, the lower limb El of the frame E may be hinged on an axis c1 which will allow of turning it Vdown for removing the mirror, said limb El being secured in its positionV of use by means of a screw e2.

The rear end lid B1 of the box B may be arranged in such a position and be made of such dimensions that it can serve when closed down for covering the mirror D and iframeV E as indicated in dot and dash lines inV Fig. 1. In the example of Figs. 5 to 8, the mirror frame E comprises an axial sleeve F the geometrical axis of which, in the position of use of the mirror, is parallel to the longitudinal axis of the collimator. By means of this sleeve F the mirror frame is adapted to engage -in a corresponding socket B2 shown as formed underneath the collimator box B. vThis arrangement, together with Vthe location of said axis obliquely with respect to the plane of the mirror, allows of turning the mirror in its support so as to bring it at will .either intoV the position shown in full lines in Fig. 6, or into the position indicated in dot and dash lines in the same ligure. These two positions, which are symmetrical in relation to the vertical axial plane 'of the collimator, serve for utilizing fixed points tothe rear situated respectively on the righ-t and left of the observer. Moreover, by starting from one or other of these positions and by rotating the sleeve through 900, the mirror can be inclined in such a manner as to receive in that position the image of a relatively elevated iixed point.

In order to iix the mirror in its diii'erent positions, the sleeve F may bemade of tubular shape and have its outer surface formed with diametrically opposed ribs f adapted to engage in corresponding notches formed in the inner end of the socket B2 on two diameters at right angles to each other.

To retain the mirror in adjusted position, there is provided a spring G encircling a. pin H and bearing at its ends respectively Aagainst the head of the said pin and the inner end of the sleeve F, serving to hold the mirror lin any position to which it has been brought. The mirror can be moved into a position symmetrical to or into a position inclined to the horizontal plane, such as the position indicated in dot and dash lines in Fig. 5, by merely pulling the mirror toward the rear s0 as to compress the spring Gr and then turningit through 180 or 90o, until the ribs f come again into coincidence with their `coperating notches in the inner end of the sleeve B2. l

Inthe example of Figs. 9 to 12, the mirror is made retractable by hinging the mirror *frame E on a vertical hinge pin e2. This arrangement allows of turning the mirror back on to one of the longitudinal sides oi the box B as indicated in dot and dash lines in Fig. 10. In this position ofy non-use the mirror leaves the crossed hair-lines 'e1-h completely uncovered.

The hinge pin e2 may be mounted on a plate B3 fixed to the box B, and the pin may carry a cam E2 having two noses for coaction with a spring for the purpose of assuring that the mirror frame E shall be held respectively in the position of use and in the position of retraction.

In the example of Figs. 13 to 15, the mirror frame FJ is fixed to the rear end lid B1 of the collimator box B. Consequently it is hinged together with the said lid on a horizontal hinge pin b1. The mirror and lid together can thus at will either be held in the position shown in full lines in Fig. 13, or be raised into one or the other of the positions indicated in dot and dash'lines in the same ligure. In lits position shown Vin full lines, the mirror allows of utilizing a iixed point to the rear situated at a mean elevation, whereas in its inclined position indicated in dot and dash lines in Fig. 13, it allows oi utilizing a relatively elevated fixed mark. In the position indicated in dot and dash lines wherein the mirror is horizontal, it completely uncovers the crossed hair-lines o-i. The. fixing of the mirror in the positions indicated in dot and dash lines may be obtained by simply clamping together the contact surfaces (which may be tinted if required) between the yoperating knob of the hinge pin o1 and the outer wall of the box B. The mirror and lid may also be turned down into the position shown in Fig. 15 wherein the mirror is protected inside the box B. Y

yWhile the illustrated embodiments have been described in considerable detail it is to be expressly understood that the invention is not to be restricted thereto, as the same is capable of receiving a variety of mechanical expressions, some of which will readily suggest themselves to those skilled in the art. Reference is theretofore to be had to the claims hereto appended for a definition of the limits of the inventon.

What is claimed is:

1. In combination with a collimator having crossed hair-lines, a single 'plane mirror for utilizing a fixed sighting point to the rear mounted adjacent said crossed hairlincs at right angles to the horizontal axial plane of the collimator and inclined to the vertical axial plane of the collimator.

2. ln combination with a collimator'havment with the vertical guide line of the crossed hair lines of the collimator and a horizontal edge of the mirror being adjacent to but not covering the horizontal guide line of said crossed hair lines.

3. ln combination With a collimator having crossed hair lines, a single plane mirror for utilizing` a iixed sighting point to the rear mounted adjacent said crossed hairlines at right angles to the horizontal axial plane of the collimator and inclined to the vertical axial plane of the collimator, and means mounting said mirror :tor movement into and out of operative position.

t. ln combination With a collimator having crossed hair-lines and the collimator box, a single plane mirror for utilizing a lixed sighting point to the rear mounted adjacent said crossed hair-lines at right angles to the horizontal axial plane of the collimator and inclined to the vertical axial plane of the collimator, and a lid for the collimator box adapted to constitute a cover for the mirror.

5. ln combination with a collimator, a mirror for utilizing a iixed sighting point to the rear mounted at right angles to the horizontal axial plane of the collimator and inclined to the vertical axial plane of the collimator, and a 'trame for said mirror comprisinfr a pivoted limb adapted to move to a position ivherein said mirror may be readily Withdrawn from said frame.

6. In combination With a collimator having crossed hair-lines, a single plane mirror for utilizing a iixed sighting point to the rear mounted at the sighting end of the collimator at right angles to the horizontal axial plane of the collimator and inclined to the vertical axial plane of the collimator, a socket member carried by the collimator, and an axial member on said mirror mounted 'for rotation in said socket member.

7. ln combination With a collimator having crossed hair-lines, a single plane mirror for utilizing a iixed sighting point to the rear mounted at the sighting end of the collimator at right angles to the horizontal axial plane of the collimator and inclined to tlievertical axial plane of the collimator, a socket member carried by the collimator,

an axial member on said mirror rotatably mounted in said socket member, and means for mzintaining said mirror in predetermined positions.

8. In combination With acollimator having crossed hair-lines, a single'plane mirror `for utilizing a lixed sighting point to the rear mounted at the sighting end oi the collimator at right angles to the horizontal axial plane oit the collimator and inclined to the vertical axial plane of the collimator, a socket member carried by the collimator, an axial member ou said mirror rotatably mounted in said socket member, and a spring maintaining said axial member in its positions of adjustment.

9. ln combination With a collimator having crossed hair-lines, a single plane mirror for utilizing a fixed sighting point to the rear mounted at the sighting end of the collimator at right angles to the horizontal axial plane of the collimator and inclined to the vertical axial plane of the collimator, and means mounting said mirror whereby it may be moved to reflect images either to the right or to the left or" the vertical axial plane of the collimator.

l0. n combination with a. collimator having crossed hair-lines, a single plane mirror for utilizing a xed sighting point to the rear mounted at the sighting end of the collimator at right angles to the horizontal axial plane of the collimator and inclined to the vertical axial plane of the collimator, and means mounting said mirror whereby it may be adjusted to reilect a relatively elevated image.

l1. In combination with a collimator having crossed hair-lines, a single plane mirror for utilizin@r a fixed sighting point to the rear, and means mounting the mirror at the sighting end of the collimator with the mirror at right angles to the horizontal axial plane oi the collimator, said mounting means permitting movement of the mirror into and out of operative positions oppositely inclined relatively to the vertical axial plane of the collimator'.

l2. ln combination with a collimator having crossed hair-lines, a single plane mirror for utilizing a iixed sighting point to the rear mounted at the sighting end oi' the collimator at right angles to the horizontal axial plano of the collimator and inclined to the vertical axial plane of the collimator, means mounting said mirror for movement into a plurality of positions, and means 'for clamping said mirror in any of its positions of adjustment.

13. In combination With a collimator having cross hair-lines, a single plane mirror for utilizing a fixed sighting point to the rear, and means mounting said mirror at the sighting end of the collimator With the mirror at right angles to the horizontal axial plane of eollimaitor, said mounting means permitting movement of the mirror Vinto and out of operative positions oppositely inclined relatively to the Vertical pleine of the eollimatol and said mounting means also permitting movement of the mirror into and out of en operative position inclined relatively to the horizontal axial plane of the voolliinator.

In testimony whereof I have signed this specification.

EUGENE SCHNEIDER. fitness-es ANDRE MOSTIOKER, JOHN F. SIMoNs. 

